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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#829940#9925. LR StringCQXYM#WA 38ms7820kbC++171.7kb2024-12-24 14:55:402024-12-24 14:55:46

Judging History

你现在查看的是最新测评结果

  • [2024-12-24 14:55:46]
  • 评测
  • 测评结果:WA
  • 用时:38ms
  • 内存:7820kb
  • [2024-12-24 14:55:40]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int t,q;
char s[500005];
char s2[500005];
int last[2];
int pr[500005][2];
int sum[500005];
int p[500005],tot;
int main()
{
	scanf("%d",&t);
	while(t--)
	{
		int len;
		scanf("%s",s+1);
		len=strlen(s+1);
		last[0]=last[1]=0;
		for(int i=1;i<=len;i++)
		{
			pr[i][0]=last[0];
			pr[i][1]=last[1];
			if(s[i]=='L') last[0]=i;
			else last[1]=i;
		}
		sum[len+1]=0;
		for(int i=len;i>=1;i--) sum[i]=sum[i+1]+(s[i]=='R');
		tot=0;
		for(int i=1;i<=len;i++) if(s[i]=='L') p[++tot]=i;
		scanf("%d",&q);
		while(q--)
		{
			scanf("%s",s2+1);
			int len2=strlen(s2+1);
			if(s2[1]=='R'&&s[1]=='L')
			{
				puts("NO");
				continue;
			}
			int lens=len;
			while(1)
			{
				if(s2[len2]=='L'&&s[lens]=='R')
				{
					puts("NO");
					break;
				}
				int now=0;
				for(int i=len2;i>=1;i--)
				{
					if(s2[i]=='L')
					{
						now=i;
						break;
					}
				}
				if(!now)
				{
					if(s[1]=='L')
					{
						puts("NO");
						break;
					}
					if(sum[1]-sum[lens+1]>=len2) puts("YES");
					else puts("NO");
					break;
				}
				else
				{
					int num=len2-now;
					int l=1,r=tot;
					while(l<r)
					{
						int mid=(l+r+1)>>1;
						if(sum[p[mid]]-sum[lens+1]>=num) l=mid;
						else r=mid-1;
					}
					l=p[l];
					if(sum[l]-sum[lens+1]<num)
					{
						puts("NO");
						break;
					}
					now--;
					while(now)
					{
						if(!l) break;
						int op=0;
						if(s2[now]=='R') op=1;
						l=pr[l][op];
						now--;
						if(op==1) break;
					}
					if(!l)
					{
						puts("NO");
						break;
					}
					if(!now)
					{
						puts("YES");
						break;
					}
					lens=l-1;
					len2=now;
				}
			}
		}
	}
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 7820kb

input:

2
RRLLRRLL
4
LLLLL
LLR
LRLR
R
RLLLLLL
3
LLLLL
RL
RRL

output:

NO
YES
NO
YES
YES
YES
NO

result:

ok 7 lines

Test #2:

score: -100
Wrong Answer
time: 38ms
memory: 7776kb

input:

100000
RRLLR
4
R
R
R
R
LRLLL
6
R
L
L
L
L
R
RLLRR
1
L
LRLLL
3
R
L
L
RLRRL
2
LRRRR
RRRL
LRLRR
2
L
R
RRLRL
4
RLRLR
RLLL
LR
RLL
RLRLL
8
R
R
R
L
L
L
R
L
RLLRR
7
R
LL
RL
R
L
L
L
LLRLR
2
L
R
RRRRL
1
RLLLR
RRLLL
2
L
L
RLLRL
1
RLLRL
LRLLL
5
RLRLL
RLLLR
RRRRL
LLRRR
RLLRR
LRLLL
3
RRLL
R
RL
LLRRL
3
L
R
LLLRR
RR...

output:

YES
YES
YES
YES
NO
YES
YES
YES
YES
NO
NO
NO
YES
YES
NO
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
NO
NO
YES
YES
YES
NO
NO
NO
NO...

result:

wrong answer 438th lines differ - expected: 'NO', found: 'YES'